Southwest Airlines flight WN 4321: Multiple routes

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Select flight date:
FLIGHT SCHEDULE
Direct Flights:
Sun 06:30 Spokane (GEG) 08:40 Sacramento (SMF) B
WN 4321 Non-stop Boeing 737-700 (Scimitar Winglets) 2:10 Operates only on 2025-11-30
Tue,Wed,Sat 08:55 Sacramento (SMF) B 10:15 Burbank (BUR)
WN 4321 Non-stop Boeing 737-700 (Scimitar Winglets) 1:20 Effective 2025-11-04 through 2025-11-15
Mon-Thu 08:55 Sacramento (SMF) B 10:15 Burbank (BUR)
WN 4321 Non-stop Boeing 737-700 (Scimitar Winglets) 1:20 Effective 2025-11-17 through 2025-11-20
Mon-Sat 08:55 Sacramento (SMF) B 10:15 Burbank (BUR)
WN 4321 Non-stop Boeing 737-700 (Scimitar Winglets) 1:20 Effective 2025-12-02 through 2025-12-11
Mon-Wed,Sat 08:55 Sacramento (SMF) B 10:15 Burbank (BUR)
WN 4321 Non-stop Boeing 737-700 (Scimitar Winglets) 1:20 Effective 2025-12-13 through 2025-12-17
Wed,Thu 08:55 Sacramento (SMF) B 10:15 Burbank (BUR)
WN 4321 Non-stop Boeing 737-700 (Scimitar Winglets) 1:20 Effective 2025-12-24 through 2026-01-01
Mon,Thu,Fri,Sun 09:05 Sacramento (SMF) B 10:25 Burbank (BUR)
WN 4321 Non-stop Boeing 737-700 (Scimitar Winglets) 1:20 Effective 2025-11-02 through 2025-11-16
Mon,Fri,Sun 09:05 Sacramento (SMF) B 10:25 Burbank (BUR)
WN 4321 Non-stop Boeing 737-700 (Scimitar Winglets) 1:20 Effective 2025-11-21 through 2025-11-28
Fri,Sun 09:05 Sacramento (SMF) B 10:25 Burbank (BUR)
WN 4321 Non-stop Boeing 737-700 (Scimitar Winglets) 1:20 Effective 2025-12-07 through 2025-12-14
Thu 09:05 Sacramento (SMF) B 10:25 Burbank (BUR)
WN 4321 Non-stop Boeing 737-700 (Scimitar Winglets) 1:20 Operates only on 2025-12-18
Mon 09:05 Sacramento (SMF) B 10:25 Burbank (BUR)
WN 4321 Non-stop Boeing 737-700 (Scimitar Winglets) 1:20 Operates only on 2026-01-05
Sun 09:15 Sacramento (SMF) B 10:30 Burbank (BUR)
WN 4321 Non-stop Boeing 737-700 (Scimitar Winglets) 1:15 Operates only on 2025-11-30
Sun 15:10 Denver (DEN) 16:50 Portland (PDX)
WN 4321 Non-stop Boeing 737 MAX 8 (7M8) 2:40 Valid until 2025-05-18
Sun 15:10 Denver (DEN) 16:50 Portland (PDX)
WN 4321 Non-stop Boeing 737 MAX 8 (7M8) 2:40 Operates only on 2025-06-01
Sun 16:45 Portland (PDX) 18:10 Sacramento (SMF) B
WN 4321 Non-stop Boeing 737 MAX 8 (7M8) 1:25 Operates only on 2025-05-25
Sun 17:35 Portland (PDX) 19:00 Sacramento (SMF) B
WN 4321 Non-stop Boeing 737 MAX 8 (7M8) 1:25 Valid until 2025-05-18
Sun 17:35 Portland (PDX) 19:00 Sacramento (SMF) B
WN 4321 Non-stop Boeing 737 MAX 8 (7M8) 1:25 Operates only on 2025-06-01
Sat 21:50 Fort Lauderdale (FLL) 1 23:55 Midway, Chicago (MDW)
WN 4321 Non-stop Boeing 737 MAX 8 (7M8) 3:05 Effective 2025-11-22 through 2025-11-29
Sat 21:50 Fort Lauderdale (FLL) 1 23:55 Midway, Chicago (MDW)
WN 4321 Non-stop Boeing 737 MAX 8 (7M8) 3:05 Effective 2025-12-20 through 2026-01-03
Non-Direct Flights:
Sun 06:30 Spokane (GEG) 10:30 Burbank (BUR)
WN 4321 1-stop Boeing 737-700 (Scimitar Winglets) 4:00 Operates only on 2025-11-30
Sun 15:10 Denver (DEN) 19:00 Sacramento (SMF) B
WN 4321 1-stop Boeing 737 MAX 8 (7M8) 4:50 Valid until 2025-05-18
Sun 15:10 Denver (DEN) 19:00 Sacramento (SMF) B
WN 4321 1-stop Boeing 737 MAX 8 (7M8) 4:50 Operates only on 2025-06-01
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This flight number is listed as serving the following routes:


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Southwest Airlines flight WN 4321: Multiple routes
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Select flight date:
FLIGHT SCHEDULE
Direct Flights:
Southwest Airlines WN4321
06:30
Spokane (GEG)

08:40
Sacramento (SMF) B
Operates only on 2025-11-30
Mon
-
Tue
-
Wed
-
Thu
-
Fri
-
Sat
-
Sun
Duration: 2:10, non-stop
Boeing 737-700 (Scimitar Winglets)
Southwest Airlines WN4321
08:55
Sacramento (SMF) B

10:15
Burbank (BUR)
Effective 2025-11-04 through 2025-11-15
Mon
-
Tue
Wed
Thu
-
Fri
-
Sat
Sun
-
Duration: 1:20, non-stop
Boeing 737-700 (Scimitar Winglets)
Southwest Airlines WN4321
08:55
Sacramento (SMF) B

10:15
Burbank (BUR)
Effective 2025-11-17 through 2025-11-20
Mon
Tue
Wed
Thu
Fri
-
Sat
-
Sun
-
Duration: 1:20, non-stop
Boeing 737-700 (Scimitar Winglets)
Southwest Airlines WN4321
08:55
Sacramento (SMF) B

10:15
Burbank (BUR)
Effective 2025-12-02 through 2025-12-11
Mon
Tue
Wed
Thu
Fri
Sat
Sun
-
Duration: 1:20, non-stop
Boeing 737-700 (Scimitar Winglets)
Southwest Airlines WN4321
08:55
Sacramento (SMF) B

10:15
Burbank (BUR)
Effective 2025-12-13 through 2025-12-17
Mon
Tue
Wed
Thu
-
Fri
-
Sat
Sun
-
Duration: 1:20, non-stop
Boeing 737-700 (Scimitar Winglets)
Southwest Airlines WN4321
08:55
Sacramento (SMF) B

10:15
Burbank (BUR)
Effective 2025-12-24 through 2026-01-01
Mon
-
Tue
-
Wed
Thu
Fri
-
Sat
-
Sun
-
Duration: 1:20, non-stop
Boeing 737-700 (Scimitar Winglets)
Southwest Airlines WN4321
09:05
Sacramento (SMF) B

10:25
Burbank (BUR)
Effective 2025-11-02 through 2025-11-16
Mon
Tue
-
Wed
-
Thu
Fri
Sat
-
Sun
Duration: 1:20, non-stop
Boeing 737-700 (Scimitar Winglets)
Southwest Airlines WN4321
09:05
Sacramento (SMF) B

10:25
Burbank (BUR)
Effective 2025-11-21 through 2025-11-28
Mon
Tue
-
Wed
-
Thu
-
Fri
Sat
-
Sun
Duration: 1:20, non-stop
Boeing 737-700 (Scimitar Winglets)
Southwest Airlines WN4321
09:05
Sacramento (SMF) B

10:25
Burbank (BUR)
Effective 2025-12-07 through 2025-12-14
Mon
-
Tue
-
Wed
-
Thu
-
Fri
Sat
-
Sun
Duration: 1:20, non-stop
Boeing 737-700 (Scimitar Winglets)
Southwest Airlines WN4321
09:05
Sacramento (SMF) B

10:25
Burbank (BUR)
Operates only on 2025-12-18
Mon
-
Tue
-
Wed
-
Thu
Fri
-
Sat
-
Sun
-
Duration: 1:20, non-stop
Boeing 737-700 (Scimitar Winglets)
Southwest Airlines WN4321
09:05
Sacramento (SMF) B

10:25
Burbank (BUR)
Operates only on 2026-01-05
Mon
Tue
-
Wed
-
Thu
-
Fri
-
Sat
-
Sun
-
Duration: 1:20, non-stop
Boeing 737-700 (Scimitar Winglets)
Southwest Airlines WN4321
09:15
Sacramento (SMF) B

10:30
Burbank (BUR)
Operates only on 2025-11-30
Mon
-
Tue
-
Wed
-
Thu
-
Fri
-
Sat
-
Sun
Duration: 1:15, non-stop
Boeing 737-700 (Scimitar Winglets)
Southwest Airlines WN4321
15:10
Denver (DEN)

16:50
Portland (PDX)
Valid until 2025-05-18
Mon
-
Tue
-
Wed
-
Thu
-
Fri
-
Sat
-
Sun
Duration: 2:40, non-stop
Boeing 737 MAX 8 (7M8)
Southwest Airlines WN4321
15:10
Denver (DEN)

16:50
Portland (PDX)
Operates only on 2025-06-01
Mon
-
Tue
-
Wed
-
Thu
-
Fri
-
Sat
-
Sun
Duration: 2:40, non-stop
Boeing 737 MAX 8 (7M8)
Southwest Airlines WN4321
16:45
Portland (PDX)

18:10
Sacramento (SMF) B
Operates only on 2025-05-25
Mon
-
Tue
-
Wed
-
Thu
-
Fri
-
Sat
-
Sun
Duration: 1:25, non-stop
Boeing 737 MAX 8 (7M8)
Southwest Airlines WN4321
17:35
Portland (PDX)

19:00
Sacramento (SMF) B
Valid until 2025-05-18
Mon
-
Tue
-
Wed
-
Thu
-
Fri
-
Sat
-
Sun
Duration: 1:25, non-stop
Boeing 737 MAX 8 (7M8)
Southwest Airlines WN4321
17:35
Portland (PDX)

19:00
Sacramento (SMF) B
Operates only on 2025-06-01
Mon
-
Tue
-
Wed
-
Thu
-
Fri
-
Sat
-
Sun
Duration: 1:25, non-stop
Boeing 737 MAX 8 (7M8)
Southwest Airlines WN4321
21:50
Fort Lauderdale (FLL) 1

23:55
Midway, Chicago (MDW)
Effective 2025-11-22 through 2025-11-29
Mon
-
Tue
-
Wed
-
Thu
-
Fri
-
Sat
Sun
-
Duration: 3:05, non-stop
Boeing 737 MAX 8 (7M8)
Southwest Airlines WN4321
21:50
Fort Lauderdale (FLL) 1

23:55
Midway, Chicago (MDW)
Effective 2025-12-20 through 2026-01-03
Mon
-
Tue
-
Wed
-
Thu
-
Fri
-
Sat
Sun
-
Duration: 3:05, non-stop
Boeing 737 MAX 8 (7M8)
Non-Direct Flights:
Southwest Airlines WN4321
06:30
Spokane (GEG)

10:30
Burbank (BUR)
Operates only on 2025-11-30
Mon
-
Tue
-
Wed
-
Thu
-
Fri
-
Sat
-
Sun
Duration: 4:00, 1-stop
Boeing 737-700 (Scimitar Winglets)
Southwest Airlines WN4321
15:10
Denver (DEN)

19:00
Sacramento (SMF) B
Valid until 2025-05-18
Mon
-
Tue
-
Wed
-
Thu
-
Fri
-
Sat
-
Sun
Duration: 4:50, 1-stop
Boeing 737 MAX 8 (7M8)
Southwest Airlines WN4321
15:10
Denver (DEN)

19:00
Sacramento (SMF) B
Operates only on 2025-06-01
Mon
-
Tue
-
Wed
-
Thu
-
Fri
-
Sat
-
Sun
Duration: 4:50, 1-stop
Boeing 737 MAX 8 (7M8)
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This flight number is listed as serving the following routes:
  • Denver (DEN) - Portland (PDX)
  • Denver (DEN) - Sacramento (SMF)
  • Fort Lauderdale (FLL) - Midway, Chicago (MDW)
  • Portland (PDX) - Sacramento (SMF)
  • Sacramento (SMF) - Burbank (BUR)
  • Spokane (GEG) - Burbank (BUR)
  • Spokane (GEG) - Sacramento (SMF)
All Southwest Airlines flights
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